Table 1 Water exposures in Røros and neighbouring Holtålen, May 2007, including all household members in the cohort
Exposure | Cases | Total exposed | AR % | RR (95% CI) | Fishers exact p |
|---|---|---|---|---|---|
Holtålen waterworks | 3 | 97 | 3 | ref. | |
Røros waterworks | 102 | 243 | 42 | 13.5 (4.4 – 41.7) | < 0.00001 |